System Sensor 2151 Photoelectric Low-Profile Plug-In Smoke Detector
Image of 4
Key Features
- Low-profile, plug-in design simplifies installation and preserves ceiling aesthetics for commercial spaces
- Photoelectric optical sensing chamber detects smoldering fires early, reducing false alarms and improving safety monitoring
- Compatible with System Sensor B114LP/B114LPBT bases and 24V/120V supplies for flexible integration with existing control panels
- Removable cover, insect screen and twist-out head enable fast on-site maintenance and cleaning to minimize downtime
- Meets UL 268 and supports NFPA 72 field sensitivity metering for regulatory compliance and reliable security system performance
- 360° visible LEDs provide clear status indication for quick visual verification during inspections and monitoring
Quick Specifications
- Product Model
- 2151
- Brand Name
- System Sensor
- Product Name
- 2151 Smoke Detector
- Product Type
- Smoke Detector
Explore the details
Product information
2151
Overview
Designed for reliable open-area protection, the System Sensor 2151 Photoelectric Low-Profile Plug-In Smoke Detector delivers early detection of smoldering fires while keeping installation and maintenance straightforward. The advanced optical sensing chamber provides superior detection of slow-burning smoke—a common challenge in commercial and industrial environments—helping building managers and security teams reduce false alarms and improve overall fire monitoring. At just 2" high, the low-profile design preserves ceiling aesthetics and installs quickly into standard electrical boxes or System Sensor B114LP/B114LPBT bases, supporting 24V and 120VAC installations for flexible integration with existing control panels. The 2151 is UL 268 listed and supports NFPA 72 field sensitivity metering, making it suitable for code-compliant security and fire detection systems. Service-minded features—like a removable cover, insect screen, and twist-out detector head—cut maintenance time and keep systems operational with minimal disruption. Ideal for open areas, ducts with low air flow, and commercial HVAC-adjacent installations, the 2151 is a dependable choice for security, surveillance, and building monitoring programs. Contact sales or add to your next specification to enhance fire detection reliability.
Features
- Low-profile, plug-in design simplifies installation and preserves ceiling aesthetics for commercial spaces
- Photoelectric optical sensing chamber detects smoldering fires early, reducing false alarms and improving safety monitoring
- Compatible with System Sensor B114LP/B114LPBT bases and 24V/120V supplies for flexible integration with existing control panels
- Removable cover, insect screen and twist-out head enable fast on-site maintenance and cleaning to minimize downtime
- Meets UL 268 and supports NFPA 72 field sensitivity metering for regulatory compliance and reliable security system performance
- 360° visible LEDs provide clear status indication for quick visual verification during inspections and monitoring
| General Information | |
|---|---|
| Brand Name | System Sensor |
| Manufacturer | Honeywell International, Inc |
| Product Name | 2151 Smoke Detector |
| Product Type | Smoke Detector |
| Product Model | 2151 |
| Product Series | 100 |
| Country of Origin | MX |
| Manufacturer Part Number | 2151 |
| Technical Information | |
| Sensor Type | Photoelectric |
| Detectable Medium | Fire |
| Sensing Technology | Photoelectric |
| Connectivity Technology | Wired |
| Certifications | |
| UL Listed | Yes |
| Certifications | UL 268 |
| Controls/Indicators | |
| Status Indicators | Yes |
| Environmental Conditions | |
| Operating Relative Humidity (H-H) | 10-93% |
| Physical Characteristics | |
| Color | White |
| Height | 2.00" |
| Form Factor | Ceiling Mount |
| Power Description | |
| Power Source | AC Power, DC Power |
| Input Voltage | 35V DC |
| Product Information | |
| Mount Type | Ceiling Mount |
| Warranty | |
| Limited Warranty | 3-Year |
| Miscellaneous | |
| Features | Shows a 360° view angle of the alarm LEDs |
| Compatibility | Control Panels |
No matching specifications
Try a different term, such as a connector type or resolution.
Plan your purchase
Is this right for your project?
Confirm the model, required accessories and delivery needs before ordering.
- SKU:
- 2151
- Manufacturer part:
- 2151
How do I confirm compatibility?
Check the specifications and manufacturer documents for your existing system. Send us your model numbers and project requirements if you need help selecting equipment or accessories.
Ask a product specialistWhen will this item ship?
Availability is shown above. Special-order items and project quantities may need additional lead time. Contact us to confirm a delivery date before scheduling installation.
Shipping, freight and delivery detailsWhat should I know about returns?
Returns require an approved RMA. Consult the linked return policy for deadlines and eligibility. For standard non-defective returns, eligible factory-sealed items carry a 15% restocking fee and customer-paid return shipping; open-box and used items are refused. Defective and DOA claims follow the policy's separate terms. Special orders and other exclusions are final sale.
Read return eligibility and exclusionsSystem Sensor 2151 Photoelectric Low-Profile Plug-In Smoke Detector
2151